Cultivator.



W. A. CALVIN.

OULTIVATOR.

APPLICATION FILED JUNE 1, 1911. 1 4@ 79 v Patented Oct. 8, 1912.

3 SHBET8BHBET l.

s WITNESSES INVENTOR S 04 ,W i1; 56m, M

A llorncw;

W. A. CALVIN.

GULTIVATOR.

APPLICATION FILED mm; 1, 1911.

1,040,879. Patented 0013.8,1912.

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WITNESSES INVENTOR W. A. CALVIN.

OULTIVATOR.

APPLICATION FILED JUNE 1, 1911.

PatentedDct. 8, 1912 s annn'rs-s nnnw 3 INVENTO'RI WITNESSES ran STATESPATENT FFICE.

WILLIA1V[ A. GALVIILOF MANHATTAN, KANSAS.

CULTIVATOR.

Specification of Letters Patent.

Patented Oct 8, 1912.

Application filed June 1, 1911. Serial No. 630,644.

' tors, and more particularly to cultivators of the two-rowtype; and itconsists in the peculiar and advantageous cultivator hereinafterdescribed and particularly pointed out ,in the claims appended.

' In the drawings accompanying and forming part'of thisspecification:Figure 1 is a plan illustrating a two-row cultivator embodying myinvention. Fig. 2 is a vertical section on an enlarged scale, taken inthe plane indicated by the line 22 of Fig. 1 and showing in sideelevation the right-hand member of the two-row cultivator. Fig. 3 is arear elevation of the said member. Fig. 4c-is an enlarged fragmentaryperspective illustrative of the manner in which the roekshaftscomplementary to the disks and the plows,.respectively-, are connectedwith the levers for rocking said shafts.

Similar letters and numerals designate corresponding parts in all of theviews of the drawings.

The two-row cultivator comprises two members A connected together in theman ner shown in Fig. 1 and hereinafter described, and as the saidmembers A are identical in construction a detailed description of theone shown at the right of Fig. l and in Figs. 2, and l-will sullicetoimpart a definite understanding f'both.

Among other features the members A referred to comprise a mainfl'ttll'lO. This of course may be of any construction consonant with thepurpose of my invention wit-hout involving departure from the scope ofthe same as claimed, though I prefer to have it comprise side bars 1, afront cross-bar 2 fixed to and extending bet-ween said side bars, anintermediate cross-bar 3 fixed to and extending between blocks 4 on theside bars,

and a 'longitudinally-disposed raised support 5, occupying thelongitudinal center of the member and fixed at its ends to the crossbars2 and 3. The rear end of the main frame is supportedby ground wheels 6,of the caster type, and the forward end of said frame is supported byground wheels 7, connected through hangers h with saidforward end.

The hangers h are clipped or otherwise adjustably fixed on the forwardframe bar 2 of the member A, and consequently the wheels 7 maybe spacedquite close together as when corn is to be' plowed the first time, ormay be arranged a considerable distance apart, as when com is to beplowed the last time. It is also to be noted here that when corn is tobe plowed the first time the wheels 7 are relatively arranged as shownin Fig. 1, while when corn is to be plowed the last time tancc apart, Iprefer that the hangers h be reversed on the frame bar 1 s0 that-theconvex sides of the widely separated wheels will be opposed to eachother.

As before stated, the wheels 7 bear the weight of the forward portion ofthe mcniher A. and from this it follows that the draft animals arecalled upon to bear only the weight of the tongue 8; said tongue beinghinged at the points 9 to the front bar 1 of the main frame.

Journaled in suitable bearings carried by the side bars 1 and arrangedimmediately in rear of the frame bar 2 is a transverse rock-shaft 10that extends inward beyond the inner side bar 1, and clipped orotherwise adjust-ably fixed on the said shaft 10 so as to be capable ofbeing adjusted in the direction of the length thereof are disk beams 11.These beams 1'! extend rearward from the shaft 10, and each is providedat its rear end with a depending portion or shank 12 on which a disk 13is carried.

The disk beams 11 may be placed close together for the first plowing ofcorn and eon'iparatively far a part for the last plowing thereof. asbefore stated, and in either case it will be manifest that the saidbeams will be adequately braced by braces 35 each of which is disposedat an acute angle to its respective beam, and is made up of a forwardrod section, pivoted at 36 to the rockshaft 10, a rear rod sectionconnected at 37 and the said wheels are spaced a greater disto therespective beam, and a turnbuckle i interposed between and arljustablyconnecting the. rod sections and by manipulation of which the brace maybe increased or diminished in length. combined with the beams 11 renderthe latter absolutely rigid and eliminate all side draft, twist andstrain on the beams with The said braces 35 Y shown 1n the result' thatthe draft is directly in the line ofoperation orforward movement of themember.

When the beams 11 are arranged a greater distance apart than is shown111 Fig. 1, the

braces are, of course, shortened, while when the beamsare arrangedclosertogether, said braces are increased in length. I would also have it hereunderstood that when the beams 11 are arranged a cat distance apart, asfor the plowing 0 corn the last time, the disks 13 are"reversed on therear dependingportions of said beams i. 6-, are arranged Wltl'l theirconcave sides inward or opposed instead of with their convex sidesopposed in the manner shown in Fig. 1.

By rocking of the shaft 10,'the disks 13" may be put into and raised outof the ound, and for the purpose of rocking said' and carrying asegmental rack 48 for the.

en agement of thesaid detent The secon -named hand lever 47 carries aconventional or other suitable detent 49 (see dotted lines in Fig. 4) toengage the rack 41, and

' the frame in From this it fixed tosaid rack 41, and the lever 43 isfixed 1 to the rack 48 on lever 47 it will be manifest that the diskbeams and the disks will be adjustably fixed in raised or depressedpositions, as the case when said lever 47 is he rock-shaft 42 isjournaled in the main frame, at a point in rear of the rockshaft 10, andis extended inward beyond the same manner as said shaft 10. Saidshaft'42 is provided on its extended portion with a crank 50 which isconnected through a link 51 with the lever follows that when lever 47 isthrown in one direction the plows carried by shaft 42 will be.depressed, and when said lever is thrown in the opposite d1rection, saidplows will be raised.

The plow beams 52 are clipped or otherwise adjustably fixed on the shaft42 so as to be capable of adjustment in the direction of the length ofsaid shaft, and are braced by braces 53 constructed like the beforedescribed braces 35 and arranged with respect to the shaft 42 andthebeams 52 in the same manner that said braces 35 are arranged withrespect to the shaft 10 and disk beams 11. Said braces 53 are, however,much longer than the braces 35 because of. the disposition of the plows"4 considerably in rear of the disks 13. For plowing corn the link 46connecting thefirst time the said plows 54 are arranged as shown in Fig.1i. 6., with their longitudinal vertical portions 02 opposed to eachother and quite close together, while for plowin corn the last time theplow beams 52 and the plows 54 are arranged a considerabledistanceapart, and the said plows 54 are reversed on the beams-i. e., arearranged with their longitudinal vertical-portions '00 outermost andtheir mold-boards y innermost or opposed to each other.

It will be gathered from the foregoing that like the disk beams 11, theplow beams 52 are so arranged as to render them practic-ally rigid andfree from side draft, twist and'strain, and adapted to draw directly inline' of operation. 'It will also be appreciated that the adjustment ofboth disks andplows is'convenient, and that when the plow'sare thrustinto the ground, they serve to carry and hold the disks in the ground,and this notwithstanding the tendency of the disks to throw themselves out'of the ground. It will be further understood that all of thefeaturesdescribed and the advantages ascribed to said features are common to thetwo members A of the two-row cultivator.

On the support 5 of one member A, preferably the member A at the left,is pivoted a boxing B, and in said boxing is fixed,

preferably in an adjustable manner by a set screw 2, a coupling bar Cwhich carries a drivers seat D and foot rests E. The said coupling barextends loosely through a box F pivoted to swing horizontally on thesupport 5 of the right-hand member A; the said box F being provided atits ends and above and below the bar C with anti-friction rollers G, andthe bar being provided with stops H to limit its movement through thebox. At I the bar C is provided with a segmental rack that is fixedthereon,. and fulcrumed on the bar is a hand lever J which is equippedwith a detent K designed to engage said rack I. The lever J is connectedthrough a 'link rod L with the box F on right-hand member A. By reasonof the connection described between the members A and the convenientarrangement of the lever J relative to the drivers seat, the driver isenabled to maintain himself in the center of the apparatus when the sameis on sidling round.

As be ore stated each of the plows 54 comprised in my cultivator is'made up of a longitudinal vertical portion w and a mold tion desired.In other words, as the roots will grow in the direction of leastresistance, they will grow where the plow por tio-ns y have passedthrough the soil. Because of this the plow portions will never break aroot and will leave the roots under the mulch or loose soil that retainsthe moisture and is therefore calculated to promote the growth of theroots.

My novel cultivator is espec rlly adapted for plowing listed corn sinceit cuts the ridge from row to row so that the roots may pass under andat the same time avoids cutting the roots. It is also well adapted forthe plowing of beets, cotton and the like.

When shallow culture is desired, the cultivator is set shallow,whereupon the plow portions y will shave the weeds and clean the fieldon the first plowing. Moreover the cultivator can be used to advantagein plowing corn from first to last.

The, invention, broadly considered, is not limited to the specificconstruction illustrated, nor to any specific construction, as manychanges may be made in the construction Without departing from the mainprinciples of the invention and without sacrificing its chiefadvantages.

Having described my invention, what I claim and desire to secure byLetters-Patent, 1s:

v 1. In a cultivator, the combination. of a frame having a forwardcross-bar, ground wheels of the caster type supporting the rear portionof the frame, hangers-adjustably fixed on said forward frame bar andadjustable in the direction of the length of' said bar, ground wheelscarried by said hangers, transverse rocloshafts journaled on the frame,beams adjustably fixed on and extending rearward from the forwardrockshaft and adjustable lengthwise of said shaft, lengthwise adjustablebraces disposed at acute angles to the beams and connected at their rearends to the beams and pivotally connected at their forward ends to therock-shaft, beams adjustably fixed on and extending rem-ward from therear rockshaft and adjustable lengthwise of said shaft, lengthwiseadjustable braces disposed at acute angles to said beams and connectedat their rear ends to the beams and pivotally connected at their forwardends to the rear rock-shaft. and means supported directly and entirelyupon the rock-shafts for adjnstably fixing said shafts.

Q. In a cultivator, the combination of a \VliCOhStl]')}')01't(l mainframe, transverse rock-shafts thereon, a beam fixed to and extendingrearward from one of the shafts, a beam fixed to and extending rearwardfrom the other shaft, groui'nil-working devices carried by said beams,levers supported on the shafts and adapted to rock the same and carryingdetents, means supported on the shafts and adapted to cooperate with thedetent of one lever in adjustably fixing the same, and means carried bysaid lever and adapted to cooperate with the other lever in ad nistablyfixing the latter.

3. In a cultivator, the combination of a wheel-supported main frame,transverse rock-shafts journaled thereon, beams fixed to and extendingrearward from and adjustable on one of the shafts in the direction ofthe length thereof, lengthwise-adjustable braces disposed at acuteangles to said beams and connected at their rear ends to the beams andpivotaily connected at their forward ends to the shaft, ground-workingdevices earried by said beams, beams fixed to and extending rearwardfrom and adjustable on the other shaft; in the direction of the lengththereof, lengthwise-adjustable bru es disposed at acute angles to saidbeams and connected at their rear ends to the beams and pivotallyconnected at their forward ends to the respective shaft of said beams,ground-worlcing devices carried by said beams, hand levers supported byand adapted to rock the shafts and provided with detents, a segmentalrack supported by the shafts and adapted to cooperate with one of thelevers in adjustahly fixing the same, and a rack carried by said leverand adapted to cooperate with the detent of the other lever inadjustably fixing the latter.

l. In a cultivator, the combination of a wheel-supported main frame,transverse rocleshafts journaled thereon and arranged one in front ofthe other, levers supported by and adapted to rock said shafts andprovided with detents, a segmental rack supported on the shafts andadapted to eotipefate with one of the lovers in adj ustably fixing thesame, a rack carried by. said lever and adapted to cooperate with thedetent of the other lever in adjustably fixing the lat ter, beams fixedon and extending rearward from and adjustable on the forward shaft inthe direction of the length thereof, disks carried by said beams, beamsfixed on and extending rearward from and adjustable on the rear shaft inthe direction of the length thereof, plows carried by the latter beamsand disposed in rear of the disks, lengthwise adjustable braces disposedat acute a'ngles to the first-named beams and connected at their rearends thereto and pivotally con ncn'ted at their forwa rd ends to theforward rock-slmft, and lengthwise adjustable braces disposed at acuteangles to and connected at their rear ends to the second-named beams andpivotally connected at their forward ends to the rca r rock-shaft.

5. In a cultivator, the combination of a frame having a forwardcross-bar, ground wheels, of the caster type, supporting the rearportion of the frame, hangers adjust ably fixed on said forward framebar and and adjustable lengthwise of said shaft,

ground-working devices carried by said beams, and means supporteddirectly and entirely upon the rock-shafts for adjustably fixing therock-shafts.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit- '15 nesses. I

WILLIAM A. CALVIN. Witnesses EMIL THOES, '1. J. RAGLAND;

Gopies'of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

